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BOC Immingham Dissolved Acetylene Project Environmental Statement: Vol. 2 Main Text
Assessment Methodology
14.10 It terms of the assessment of archaeological aspects, the following has tasks have been
undertaken:
� review of readily available historic environment and other designated heritage assets data;
� review of historic maps;
� geophysical survey of development site and review of the findings; and
� consultation with NELC’s Archaeologist (see Table 14.1).
14.11 In terms of the assessment of historic landscape issues, the following tasks have been
undertaken:
� review of readily available historic environment data and secondary sources;
� review of historic maps; and
� site visit (April 2011).
Assessment Criteria
14.12 The assessment criteria and scoring mechanism for assessing the significance of effect are based
on the concept that the environmental effect of the proposals, in relation to an individual asset, is
determined through identifying the asset’s value and then assessing the impact that the proposal
would have on the significance of that asset (i.e. the attributes that provide it with its value). This is
a well established approach of combining value and impact to determine effect and it provides
clear differentiation between significant and insignificant environmental effects. It also reflects
policy in PPS 5, which identifies that different scales of impact (i.e. Substantial Harm and Less
than Substantial Harm) on assets of differing value have a different weighting in national policy
terms.
14.12.1 Table 14.2 sets out the criteria and definitions for determining the value of an asset.
Table 14.2 Definitions of the Value of an Asset
Value Description Example
High
Medium
Low
Nationally or internationally
important heritage assets
generally recognised through
designation as being of
exceptional interest and value.
Heritage assets recognised as
being of special interest,
generally designated.
Assets that are of interest at a
local level primarily for the
contribution to the local historic
environment.
World Heritage Sites, Grade I and II* Listed
Buildings, Grade I and II* Registered Parks
and Gardens, Scheduled Monuments,
Protected Wreck Sites, Registered Historic
Battlefields, Conservation Areas with notable
concentrations of heritage assets and
undesignated assets of national or
international importance.
Grade II Listed Buildings, Grade II
Registered Parks and Gardens,
Conservation Areas and undesignated
assets of regional or national importance.
Undesignated heritage assets such as locally
listed buildings, undesignated archaeological
sites, undesignated historic parks and
gardens etc. Can also include degraded
designated assets that no longer warrant
designation.
5100935.404 Environmental Statement August 2011 253